Clarence Willis, 67, who is at Fort Des Moines after being convicted of two counts of second-degree robbery in Polk County, walked away from the Des Moines facility at about 5:15 p.m., according to an Iowa Department of Corrections news release.

Willis is described as a black man, 5 feet 11 inches tall, weighing 227 pounds. He was admitted to the work-release facility on Feb. 28.

The Department of Corrections asked anyone with information on Willis' whereabouts to contact local police.